Buggy code:
public class RentReserveFormController implements Initializable { private static Rent rentModel ; private static Reserve reserveModel ; private static Vehicle vehicleModel ; private Customer customerModel ; private static Timestamp startDateTime ; private static Timestamp endDateTime ; final int H = 3600000 ; final int D = 86400000 ; final int W = 604800000 ; private static final String RENT = "RENT" ; private static final String RESERVE = "RESERVE" ; private static String mode = RentReserveFormController . RENT ; private String [ ] TIMINGS ; @ FXML private Label errorMessageField ; @ FXML private Label firstNameLabel ; @ FXML private TextField firstNameField ; @ FXML private Label firstNameErrorLabel ; @ FXML private Label lastNameLabel ; @ FXML private TextField lastNameField ; @ FXML private Label lastNameErrorLabel ; @ FXML private Label addressLabel ; @ FXML private TextField addressField ; @ FXML private Label addressErrorLabel ; @ FXML private Label cityLabel ; @ FXML private TextField cityField ; @ FXML private Label cityErrorLabel ; @ FXML private Label pincodeLabel ; @ FXML private TextField pincodeField ; @ FXML private Label pincodeErrorLabel ; @ FXML private Label phoneLabel ; @ FXML private TextField phoneField ; @ FXML private Label phoneErrorLabel ; @ FXML private Label driversLicenseLabel ; @ FXML private TextField driversLicenseField ; @ FXML private Label driversLicenseErrorLabel ; @ FXML private Label creditCardLabel ; @ FXML private TextField creditCardField ; @ FXML private Label creditCardErrorLabel ; @ FXML private Label creditExpiryLabel ; @ FXML private ComboBox creditExpiryMonth ; @ FXML private ComboBox creditExpiryYear ; @ FXML private Label creditExpiryErrorLabel ; @ FXML private CheckBox applyMembershipCheckBox ; @ FXML private CheckBox isRoadStarCheckBox ; @ FXML private Label startDateTimeLabel ; @ FXML private Label endDateTimeLabel ; @ FXML private Label rentalPeriodLabel ; @ FXML private Label odometerReadingLabel ; @ FXML private TextField odometerReadingField ; @ FXML private Label odometerReadingErrorLabel ; @ FXML private CheckBox equipmentCheckBox1 ; @ FXML private CheckBox equipmentCheckBox2 ; @ FXML private Button estimateButton ; @ FXML private Button confirmButton ; @ FXML private Button cancelButton ; @ FXML private Label estimateLabel ; @ FXML private Label clubMemberPts ; @ Override public void initialize ( URL url , ResourceBundle rb ) { } public static void setModeRent ( int vehicleID , Timestamp start , Timestamp end ) { } public static void setModeRentWithReservation ( int resID ) { } public static void setModeReserve ( int vehicleID , Timestamp start , Timestamp end ) { } @ FXML private void phoneNumberEntered ( ) { } @ FXML private void estimateButtonPressed ( ) { } @ FXML private void cancelButtonPressed ( ) { } @ FXML private void confirmButtonPressed ( ) { } private boolean validateForm ( ) { } private void initialiseFieldsWithReservation ( Reserve reservation ) { phoneField . setText ( reservation . getCustomer ( ) . getPhone ( ) ) ; firstNameField . setText ( reservation . getCustomer ( ) . getFirstName ( ) ) ; lastNameField . setText ( reservation . getCustomer ( ) . getLastName ( ) ) ; addressField . setText ( reservation . getCustomer ( ) . getAddress ( ) ) ; cityField . setText ( reservation . getCustomer ( ) . getCity ( ) ) ; pincodeField . setText ( reservation . getCustomer ( ) . getPincode ( ) ) ; ArrayList < AdditionalEquipment > equipment = reservation . getAdditionalEquipment ( ) ; int count = 0 ; while ( count < ( equipment . size ( ) ) ) { AdditionalEquipment additionalEquipment = equipment . get ( count ) ; if ( count == 0 ) { this . equipmentCheckBox1 . setUserData ( additionalEquipment . getID ( ) ) ; this . equipmentCheckBox1 . setText ( additionalEquipment . getName ( ) ) ; equipmentCheckBox1 . selectedProperty ( ) . set ( true ) ; } else if ( count == 1 ) { this . equipmentCheckBox2 . setUserData ( additionalEquipment . getID ( ) ) ; this . equipmentCheckBox2 . setText ( additionalEquipment . getName ( ) ) ; equipmentCheckBox2 . selectedProperty ( ) . set ( true ) ; } count ++ ; } if ( reservation . getCustomer ( ) . getIsRoadStar ( ) ) { isRoadStarCheckBox . selectedProperty ( ) . set ( true ) ; } if ( reservation . getCustomer ( ) . getIsClubMember ( ) ) { applyMembershipCheckBox . selectedProperty ( ) . set ( true ) ; clubMemberPts . setText ( ( "Points<seq2seq4repair_space>:<seq2seq4repair_space>" + ( reservation . getCustomer ( ) . getPoints ( ) ) ) ) ; } <START_BUG> estimateLabel . setText ( ( "" + ( reservation . getEstimate ( ) ) ) ) ; <END_BUG> } private void initialiseAdditionalEquipment ( ) { } public String getRentalTimePeriod ( ) { } }

Fix:
estimateLabel . setText ( ( "CAD<seq2seq4repair_space>" + ( reservation . getEstimate ( ) ) ) ) ;